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professional thesis
Zagrijanje slojnih namota u transformatorima s valovitim kotlovima
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2013. urn:nbn:hr:168:121834
Bajčić, Marino
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Electrical Engineering Fundamentals and Measurements

Institutional repository: FER Repository

Cite this document

Bajčić, M. (2013). Zagrijanje slojnih namota u transformatorima s valovitim kotlovima (Professional thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:121834

Bajčić, Marino. "Zagrijanje slojnih namota u transformatorima s valovitim kotlovima." Professional thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2013. https://urn.nsk.hr/urn:nbn:hr:168:121834

Bajčić, Marino. "Zagrijanje slojnih namota u transformatorima s valovitim kotlovima." Professional thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2013. https://urn.nsk.hr/urn:nbn:hr:168:121834

Bajčić, M. (2013). 'Zagrijanje slojnih namota u transformatorima s valovitim kotlovima', Professional thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:168:121834

Bajčić M. Zagrijanje slojnih namota u transformatorima s valovitim kotlovima [Professional thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2013 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:168:121834

M. Bajčić, "Zagrijanje slojnih namota u transformatorima s valovitim kotlovima", Professional thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:168:121834

Metadata
TitleZagrijanje slojnih namota u transformatorima s valovitim kotlovima
AuthorMarino Bajčić
MentorDavor Zvizdić (mentor)
Committee memberŽeljko Štih (predsjednik povjerenstva)
Committee memberDavor Zvizdić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Electrical Engineering Fundamentals and Measurements)
Zagreb
Defense date and country2013-07-09, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Abstract
Specijalistički rad obuhvaća analitičko računanje zagrijanja slojnih namota i ulja u transformatorima s valovitim kotlovima. Slojni se namoti modeliraju mrežnom analogijom. Naglasak na rad je da se što jednostavnijim matematičkim modelima predstavi fizikalna slika zagrijanja u transformatoru te da se time dobiju podloge koje unutar granica tolerancija od nekoliko kelvina prate stvarne rezultate mjerenja. Računanje zagrijanja u transformatoru vrlo je složeno zbog velikog broja faktora koji utječu na ishode zagrijanja. U namotima eksperimentalno su određene korekcijske krivulje utjecaja geometrije kanala na zagrijanje (visina i širina rashladnih kanala, gustoća toplinskog toka, temperaturni gradijent), dok su za zagrijanje valovitih kotlova napravljene utjecajne krivulje geometrije kotla (visina rebra, dubina rebra, korak rebra, razmak središnjica izvora i ponora topline te zastupljenost radijacije u ukupnom odvođenju topline).
Abstract (english)
Specialist thesis includes analytical calculation of temperature rises of layered windings and oil in transformers with corrugated tanks. Layered windings are modeled with electrical circut analogy. The purpose of this thesis is to represent physical reality of temperature rises with a simple mathematical modeling based upon known empiric factors to obtain a set of relations that will fit with real testing on real transformers with admissible torrance. Calculating the temperature rises in distribution transformers is very complex because of large number of factors that affect the outcomes. Empiric curves that should be determed for windings is geometry of cooling ducts( height and width ), density of the heat flux and winding boundary temperature gradient. Carrugated tanks should be defined with curves that describes tank geometry like fins height, depth of fins, step of fins, percentage of radiation in total cooling and height difference between windings and fins.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:121834
Study programmeTitle: Postgraduate specialist Study in Transformers
Study programme type: university
Study level: postgraduate specialist
Academic / professional title: sveučilišni/a specijalist/specijalistica transformatora (sveučilišni/a specijalist/specijalistica transformatora)
Type of resourceText
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
Created on2022-10-11 09:10:39